Built with money from the municipality in the year 1473, the tower rises next to the Church of San Donato; on it there used to be a public clock that was considered the rarest in the whole kingdom of Naples.. The existence of the clock is evidenced by a document where it is stated that on 20 December 1541 four gold coins were paid to a certain Rinaldo Bors for repairs done to the public clock. The Tower constituted the tallest building after the cathedral.